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Interface Engineering for 2D Phosphorene Based Optoelectronic Devices

发布时间: 2019-05-10 10:37 | 【 【打印】【关闭】

SEMINAR

The State Key Lab of

High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences

中 国 科 学 院 上 海 硅 酸 盐 研 究 所 高 性 能 陶 瓷 和 超 微 结 构 国 家 重 点 实 验 室

 

Interface Engineering for 2D Phosphorene Based Optoelectronic Devices 

        

Wei Chen

  Department of Physics, National University of Singapore, Singapore

    

    

  时间:2019 5 15日(星期三)上午 10:00    

  地点:嘉定园区F82会议室

 

欢迎广大科研人员和研究生参与讨论! 

联系人:孙宜阳(69906536  


  报告摘要: 

  Two-dimensional (2D) layered materials like graphene and transition metal dichalcogenides (TMDs) have been considered as promising building blocks for the next generation nanoelectronic devices, showing great potentials to extend the scaling limits existing in silicon based complementary metal-oxide-semiconductor field-effect-transistors (CMOS-FET) as well as to serve as a high mobility alternative to organic semiconductors for flexible electronic and optoelectronic devices. As one-atomic or a few atomic thin layers, the interface plays essential role in determining the performance of 2D materials based devices, such as charge injection/collection at metal/2D interfaces, charge carrier traps at the dielectric/2D interfaces, etc. Without precise control of the surface and interface properties, many 2D materials based devices will not function properly.  

  In this talk, I will summarize and discuss our recent work for interface engineered 2D phosphorene and TMDCs based field-effect-transistors (FETs) and photo-transistors, through the combination of in-situ FET device evaluation and photoelectron spectroscopy investigation. We will particularly emphasize on the electron and hole doping effect on the transport properties and optoelectronic response of phosphorene devices. 

    

  报告人简介:   

   Dr Wei Chen is currently an associate professor in both the Chemistry Department and Physics Department at the National University of Singapore (NUS). He received his Bachelor degree in Chemistry from Nanjing University (China) in 2001 and his PhD degree from the Chemistry Department at NUS in 2004. His current research interests include molecular-scale interface engineering for organic, graphene and 2D materials based electronics and optoelectronics, and interface-controlled nanocatalysis for energy and environmental research.